Archivio Istituzionale della RicercaIn the framework of the EFDA task HCD-08-03-01, the ITER lower hybrid current drive (LHCD) system design has been reviewed. The system aims to generate 24 MW of RF power at 5 GHz, of which 20 MW would be coupled to the plasmas. The present state of the art does not allow envisaging a unitary output of the klystrons exceeding 500 kW, so the project is based on 48 klystron units, leaving some margin when the transmission lines losses are taken into account. A high voltage power supply (HVPS), required to operate the klystrons, is proposed. A single HVPS would be used to feed and operate four klystrons in parallel configuration. Based on the above considerations, it is proposed to design and develop twelve HVPS, based on pulse step modulator (PSM) technology, each rated for 90 kV/90 A. This paper describes in details, the typical electrical requirements and the conceptual design of the proposed HVPS for the ITER LHCD system.
Proposed high voltage power supply for the ITER relevant lower hybrid current drive system / Sharma, P. K.; Kazarian, F.; Garibaldi, P.; Gassman, T.; Artaud, J. F.; Bae, Y. S.; Belo, J.; Berger By, G.; Bernard, J. M.; Cara, P. h.; Cardinali, A.; Castaldo, C.; Ceccuzzi, S.; Cesario, R.; Decker, J.; Delpech, L.; Ekedahl, A.; Garcia, J.; Goniche, M.; Guilhem, D.; Hamlyn Harris, C.; Hillairet, J.; Hoang, G. T.; Jia, H.; Huang, Q. Y.; Imbeaux, F.; Kim, S. H.; Lausenaz, Y.; Maggiora, Riccardo; Magne, R.; Marfisi, L.; Meschino, S.; Milanesio, Daniele; Mirizzi, F.; Namkung, W.; Pajewski, L.; Panaccione, L.; Peysson, Y.; Saille, A.; Schettini, G.; Schneider, M.; Tuccillo, A. A.; Tudisco, O.; Vecchi, Giuseppe; Villari, R.; Vulliez, K.; Wu, Y.; Zeng, Q. .. - In: FUSION ENGINEERING AND DESIGN. - ISSN 0920-3796. - STAMPA. - 86:(2011), pp. 819-822. (Intervento presentato al convegno 26th Symposium of Fusion Technology (SOFT-26) tenutosi a Porto, Portugal nel 27 September - 1 October 2010) [10.1016/j.fusengdes.2010.12.019].
Proposed high voltage power supply for the ITER relevant lower hybrid current drive system
MAGGIORA, Riccardo;MILANESIO, DANIELE;VECCHI, Giuseppe;
2011
Abstract
In the framework of the EFDA task HCD-08-03-01, the ITER lower hybrid current drive (LHCD) system design has been reviewed. The system aims to generate 24 MW of RF power at 5 GHz, of which 20 MW would be coupled to the plasmas. The present state of the art does not allow envisaging a unitary output of the klystrons exceeding 500 kW, so the project is based on 48 klystron units, leaving some margin when the transmission lines losses are taken into account. A high voltage power supply (HVPS), required to operate the klystrons, is proposed. A single HVPS would be used to feed and operate four klystrons in parallel configuration. Based on the above considerations, it is proposed to design and develop twelve HVPS, based on pulse step modulator (PSM) technology, each rated for 90 kV/90 A. This paper describes in details, the typical electrical requirements and the conceptual design of the proposed HVPS for the ITER LHCD system.
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https://hdl.handle.net/11583/2445375
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